lis3: solve dependency between core and ACPI
This solves the dependency between lis3lv02d.[ch] and ACPI specific methods. It introduces a ->bus_priv pointer to the device struct which is casted to 'struct acpi_device' in the ACIP layer. Changed hp_accel.c accordingly. Signed-off-by: Daniel Mack <daniel@caiaq.de> Acked-by: Pavel Machek <pavel@ucw.cz> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
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ab337a6327
commit
a38da2ed74
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@ -85,25 +85,31 @@ MODULE_DEVICE_TABLE(acpi, lis3lv02d_device_ids);
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/**
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* lis3lv02d_acpi_init - ACPI _INI method: initialize the device.
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* @handle: the handle of the device
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* @lis3: pointer to the device struct
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*
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* Returns AE_OK on success.
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* Returns 0 on success.
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*/
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acpi_status lis3lv02d_acpi_init(acpi_handle handle)
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int lis3lv02d_acpi_init(struct lis3lv02d *lis3)
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{
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return acpi_evaluate_object(handle, METHOD_NAME__INI, NULL, NULL);
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struct acpi_device *dev = lis3->bus_priv;
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if (acpi_evaluate_object(dev->handle, METHOD_NAME__INI,
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NULL, NULL) != AE_OK)
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return -EINVAL;
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return 0;
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}
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/**
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* lis3lv02d_acpi_read - ACPI ALRD method: read a register
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* @handle: the handle of the device
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* @lis3: pointer to the device struct
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* @reg: the register to read
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* @ret: result of the operation
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*
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* Returns AE_OK on success.
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* Returns 0 on success.
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*/
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acpi_status lis3lv02d_acpi_read(acpi_handle handle, int reg, u8 *ret)
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int lis3lv02d_acpi_read(struct lis3lv02d *lis3, int reg, u8 *ret)
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{
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struct acpi_device *dev = lis3->bus_priv;
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union acpi_object arg0 = { ACPI_TYPE_INTEGER };
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struct acpi_object_list args = { 1, &arg0 };
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unsigned long long lret;
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@ -111,21 +117,22 @@ acpi_status lis3lv02d_acpi_read(acpi_handle handle, int reg, u8 *ret)
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arg0.integer.value = reg;
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status = acpi_evaluate_integer(handle, "ALRD", &args, &lret);
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status = acpi_evaluate_integer(dev->handle, "ALRD", &args, &lret);
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*ret = lret;
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return status;
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return (status != AE_OK) ? -EINVAL : 0;
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}
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/**
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* lis3lv02d_acpi_write - ACPI ALWR method: write to a register
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* @handle: the handle of the device
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* @lis3: pointer to the device struct
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* @reg: the register to write to
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* @val: the value to write
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*
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* Returns AE_OK on success.
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* Returns 0 on success.
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*/
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acpi_status lis3lv02d_acpi_write(acpi_handle handle, int reg, u8 val)
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int lis3lv02d_acpi_write(struct lis3lv02d *lis3, int reg, u8 val)
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{
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struct acpi_device *dev = lis3->bus_priv;
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unsigned long long ret; /* Not used when writting */
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union acpi_object in_obj[2];
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struct acpi_object_list args = { 2, in_obj };
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@ -135,7 +142,10 @@ acpi_status lis3lv02d_acpi_write(acpi_handle handle, int reg, u8 val)
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in_obj[1].type = ACPI_TYPE_INTEGER;
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in_obj[1].integer.value = val;
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return acpi_evaluate_integer(handle, "ALWR", &args, &ret);
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if (acpi_evaluate_integer(dev->handle, "ALWR", &args, &ret) != AE_OK)
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return -EINVAL;
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return 0;
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}
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static int lis3lv02d_dmi_matched(const struct dmi_system_id *dmi)
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@ -217,7 +227,7 @@ static struct dmi_system_id lis3lv02d_dmi_ids[] = {
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static void hpled_set(struct delayed_led_classdev *led_cdev, enum led_brightness value)
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{
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acpi_handle handle = lis3_dev.device->handle;
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struct acpi_device *dev = lis3_dev.bus_priv;
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unsigned long long ret; /* Not used when writing */
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union acpi_object in_obj[1];
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struct acpi_object_list args = { 1, in_obj };
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@ -225,7 +235,7 @@ static void hpled_set(struct delayed_led_classdev *led_cdev, enum led_brightness
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in_obj[0].type = ACPI_TYPE_INTEGER;
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in_obj[0].integer.value = !!value;
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acpi_evaluate_integer(handle, "ALED", &args, &ret);
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acpi_evaluate_integer(dev->handle, "ALED", &args, &ret);
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}
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static struct delayed_led_classdev hpled_led = {
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@ -262,23 +272,6 @@ static void lis3lv02d_enum_resources(struct acpi_device *device)
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printk(KERN_DEBUG DRIVER_NAME ": Error getting resources\n");
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}
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static s16 lis3lv02d_read_16(acpi_handle handle, int reg)
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{
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u8 lo, hi;
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lis3_dev.read(handle, reg - 1, &lo);
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lis3_dev.read(handle, reg, &hi);
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/* In "12 bit right justified" mode, bit 6, bit 7, bit 8 = bit 5 */
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return (s16)((hi << 8) | lo);
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}
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static s16 lis3lv02d_read_8(acpi_handle handle, int reg)
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{
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s8 lo;
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lis3_dev.read(handle, reg, &lo);
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return lo;
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}
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static int lis3lv02d_add(struct acpi_device *device)
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{
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int ret;
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@ -286,7 +279,7 @@ static int lis3lv02d_add(struct acpi_device *device)
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if (!device)
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return -EINVAL;
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lis3_dev.device = device;
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lis3_dev.bus_priv = device;
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lis3_dev.init = lis3lv02d_acpi_init;
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lis3_dev.read = lis3lv02d_acpi_read;
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lis3_dev.write = lis3lv02d_acpi_write;
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@ -294,23 +287,8 @@ static int lis3lv02d_add(struct acpi_device *device)
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strcpy(acpi_device_class(device), ACPI_MDPS_CLASS);
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device->driver_data = &lis3_dev;
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lis3lv02d_acpi_read(device->handle, WHO_AM_I, &lis3_dev.whoami);
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switch (lis3_dev.whoami) {
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case LIS_DOUBLE_ID:
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printk(KERN_INFO DRIVER_NAME ": 2-byte sensor found\n");
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lis3_dev.read_data = lis3lv02d_read_16;
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lis3_dev.mdps_max_val = 2048;
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break;
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case LIS_SINGLE_ID:
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printk(KERN_INFO DRIVER_NAME ": 1-byte sensor found\n");
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lis3_dev.read_data = lis3lv02d_read_8;
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lis3_dev.mdps_max_val = 128;
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break;
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default:
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printk(KERN_ERR DRIVER_NAME
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": unknown sensor type 0x%X\n", lis3_dev.whoami);
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return -EINVAL;
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}
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/* obtain IRQ number of our device from ACPI */
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lis3lv02d_enum_resources(device);
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/* If possible use a "standard" axes order */
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if (dmi_check_system(lis3lv02d_dmi_ids) == 0) {
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@ -319,18 +297,17 @@ static int lis3lv02d_add(struct acpi_device *device)
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lis3_dev.ac = lis3lv02d_axis_normal;
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}
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INIT_WORK(&hpled_led.work, delayed_set_status_worker);
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ret = led_classdev_register(NULL, &hpled_led.led_classdev);
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/* call the core layer do its init */
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ret = lis3lv02d_init_device(&lis3_dev);
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if (ret)
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return ret;
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/* obtain IRQ number of our device from ACPI */
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lis3lv02d_enum_resources(lis3_dev.device);
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ret = lis3lv02d_init_device(&lis3_dev);
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INIT_WORK(&hpled_led.work, delayed_set_status_worker);
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ret = led_classdev_register(NULL, &hpled_led.led_classdev);
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if (ret) {
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lis3lv02d_joystick_disable();
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lis3lv02d_poweroff(&lis3_dev);
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flush_work(&hpled_led.work);
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led_classdev_unregister(&hpled_led.led_classdev);
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return ret;
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}
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@ -343,7 +320,7 @@ static int lis3lv02d_remove(struct acpi_device *device, int type)
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return -EINVAL;
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lis3lv02d_joystick_disable();
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lis3lv02d_poweroff(device->handle);
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lis3lv02d_poweroff(&lis3_dev);
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flush_work(&hpled_led.work);
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led_classdev_unregister(&hpled_led.led_classdev);
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@ -356,7 +333,7 @@ static int lis3lv02d_remove(struct acpi_device *device, int type)
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static int lis3lv02d_suspend(struct acpi_device *device, pm_message_t state)
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{
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/* make sure the device is off when we suspend */
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lis3lv02d_poweroff(device->handle);
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lis3lv02d_poweroff(&lis3_dev);
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return 0;
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}
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@ -365,9 +342,9 @@ static int lis3lv02d_resume(struct acpi_device *device)
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/* put back the device in the right state (ACPI might turn it on) */
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mutex_lock(&lis3_dev.lock);
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if (lis3_dev.usage > 0)
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lis3lv02d_poweron(device->handle);
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lis3lv02d_poweron(&lis3_dev);
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else
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lis3lv02d_poweroff(device->handle);
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lis3lv02d_poweroff(&lis3_dev);
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mutex_unlock(&lis3_dev.lock);
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return 0;
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}
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@ -36,7 +36,6 @@
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#include <linux/freezer.h>
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#include <linux/uaccess.h>
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#include <linux/miscdevice.h>
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#include <acpi/acpi_drivers.h>
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#include <asm/atomic.h>
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#include "lis3lv02d.h"
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@ -53,18 +52,27 @@
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* joystick.
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*/
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struct acpi_lis3lv02d lis3_dev = {
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struct lis3lv02d lis3_dev = {
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.misc_wait = __WAIT_QUEUE_HEAD_INITIALIZER(lis3_dev.misc_wait),
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};
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EXPORT_SYMBOL_GPL(lis3_dev);
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static s16 lis3lv02d_read_16(acpi_handle handle, int reg)
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static s16 lis3lv02d_read_8(struct lis3lv02d *lis3, int reg)
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{
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s8 lo;
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if (lis3->read(lis3, reg, &lo) < 0)
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return 0;
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return lo;
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}
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static s16 lis3lv02d_read_16(struct lis3lv02d *lis3, int reg)
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{
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u8 lo, hi;
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lis3_dev.read(handle, reg, &lo);
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lis3_dev.read(handle, reg + 1, &hi);
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lis3->read(lis3, reg - 1, &lo);
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lis3->read(lis3, reg, &hi);
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/* In "12 bit right justified" mode, bit 6, bit 7, bit 8 = bit 5 */
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return (s16)((hi << 8) | lo);
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}
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@ -86,36 +94,36 @@ static inline int lis3lv02d_get_axis(s8 axis, int hw_values[3])
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/**
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* lis3lv02d_get_xyz - Get X, Y and Z axis values from the accelerometer
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* @handle: the handle to the device
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* @x: where to store the X axis value
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* @y: where to store the Y axis value
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* @z: where to store the Z axis value
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* @lis3: pointer to the device struct
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* @x: where to store the X axis value
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* @y: where to store the Y axis value
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* @z: where to store the Z axis value
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*
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* Note that 40Hz input device can eat up about 10% CPU at 800MHZ
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*/
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static void lis3lv02d_get_xyz(acpi_handle handle, int *x, int *y, int *z)
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static void lis3lv02d_get_xyz(struct lis3lv02d *lis3, int *x, int *y, int *z)
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{
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int position[3];
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position[0] = lis3_dev.read_data(handle, OUTX);
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position[1] = lis3_dev.read_data(handle, OUTY);
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position[2] = lis3_dev.read_data(handle, OUTZ);
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position[0] = lis3_dev.read_data(lis3, OUTX);
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position[1] = lis3_dev.read_data(lis3, OUTY);
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position[2] = lis3_dev.read_data(lis3, OUTZ);
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*x = lis3lv02d_get_axis(lis3_dev.ac.x, position);
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*y = lis3lv02d_get_axis(lis3_dev.ac.y, position);
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*z = lis3lv02d_get_axis(lis3_dev.ac.z, position);
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}
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void lis3lv02d_poweroff(acpi_handle handle)
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void lis3lv02d_poweroff(struct lis3lv02d *lis3)
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{
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lis3_dev.is_on = 0;
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}
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EXPORT_SYMBOL_GPL(lis3lv02d_poweroff);
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void lis3lv02d_poweron(acpi_handle handle)
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void lis3lv02d_poweron(struct lis3lv02d *lis3)
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{
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lis3_dev.is_on = 1;
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lis3_dev.init(handle);
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lis3_dev.init(lis3);
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}
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EXPORT_SYMBOL_GPL(lis3lv02d_poweron);
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@ -124,13 +132,13 @@ EXPORT_SYMBOL_GPL(lis3lv02d_poweron);
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* device will always be on until a call to lis3lv02d_decrease_use(). Not to be
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* used from interrupt context.
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*/
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static void lis3lv02d_increase_use(struct acpi_lis3lv02d *dev)
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static void lis3lv02d_increase_use(struct lis3lv02d *dev)
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{
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mutex_lock(&dev->lock);
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dev->usage++;
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if (dev->usage == 1) {
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if (!dev->is_on)
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lis3lv02d_poweron(dev->device->handle);
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lis3lv02d_poweron(dev);
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}
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mutex_unlock(&dev->lock);
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}
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@ -139,12 +147,12 @@ static void lis3lv02d_increase_use(struct acpi_lis3lv02d *dev)
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* To be called whenever a usage of the device is stopped.
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* It will make sure to turn off the device when there is not usage.
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*/
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static void lis3lv02d_decrease_use(struct acpi_lis3lv02d *dev)
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static void lis3lv02d_decrease_use(struct lis3lv02d *dev)
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{
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mutex_lock(&dev->lock);
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dev->usage--;
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if (dev->usage == 0)
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lis3lv02d_poweroff(dev->device->handle);
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lis3lv02d_poweroff(dev);
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mutex_unlock(&dev->lock);
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}
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@ -291,7 +299,7 @@ static int lis3lv02d_joystick_kthread(void *data)
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int x, y, z;
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while (!kthread_should_stop()) {
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lis3lv02d_get_xyz(lis3_dev.device->handle, &x, &y, &z);
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lis3lv02d_get_xyz(&lis3_dev, &x, &y, &z);
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input_report_abs(lis3_dev.idev, ABS_X, x - lis3_dev.xcalib);
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input_report_abs(lis3_dev.idev, ABS_Y, y - lis3_dev.ycalib);
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input_report_abs(lis3_dev.idev, ABS_Z, z - lis3_dev.zcalib);
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@ -325,7 +333,8 @@ static void lis3lv02d_joystick_close(struct input_dev *input)
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static inline void lis3lv02d_calibrate_joystick(void)
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{
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lis3lv02d_get_xyz(lis3_dev.device->handle, &lis3_dev.xcalib, &lis3_dev.ycalib, &lis3_dev.zcalib);
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lis3lv02d_get_xyz(&lis3_dev,
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&lis3_dev.xcalib, &lis3_dev.ycalib, &lis3_dev.zcalib);
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}
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int lis3lv02d_joystick_enable(void)
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@ -382,7 +391,7 @@ static ssize_t lis3lv02d_position_show(struct device *dev,
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int x, y, z;
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lis3lv02d_increase_use(&lis3_dev);
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lis3lv02d_get_xyz(lis3_dev.device->handle, &x, &y, &z);
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lis3lv02d_get_xyz(&lis3_dev, &x, &y, &z);
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lis3lv02d_decrease_use(&lis3_dev);
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return sprintf(buf, "(%d,%d,%d)\n", x, y, z);
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}
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@ -412,7 +421,7 @@ static ssize_t lis3lv02d_rate_show(struct device *dev,
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int val;
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lis3lv02d_increase_use(&lis3_dev);
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lis3_dev.read(lis3_dev.device->handle, CTRL_REG1, &ctrl);
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lis3_dev.read(&lis3_dev, CTRL_REG1, &ctrl);
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lis3lv02d_decrease_use(&lis3_dev);
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val = (ctrl & (CTRL1_DF0 | CTRL1_DF1)) >> 4;
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return sprintf(buf, "%d\n", lis3lv02dl_df_val[val]);
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@ -435,7 +444,7 @@ static struct attribute_group lis3lv02d_attribute_group = {
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};
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static int lis3lv02d_add_fs(struct acpi_device *device)
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static int lis3lv02d_add_fs(struct lis3lv02d *lis3)
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{
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lis3_dev.pdev = platform_device_register_simple(DRIVER_NAME, -1, NULL, 0);
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if (IS_ERR(lis3_dev.pdev))
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@ -456,10 +465,29 @@ EXPORT_SYMBOL_GPL(lis3lv02d_remove_fs);
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* Initialise the accelerometer and the various subsystems.
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* Should be rather independant of the bus system.
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*/
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int lis3lv02d_init_device(struct acpi_lis3lv02d *dev)
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int lis3lv02d_init_device(struct lis3lv02d *dev)
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{
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dev->whoami = lis3lv02d_read_8(dev, WHO_AM_I);
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switch (dev->whoami) {
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case LIS_DOUBLE_ID:
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printk(KERN_INFO DRIVER_NAME ": 2-byte sensor found\n");
|
||||
dev->read_data = lis3lv02d_read_16;
|
||||
dev->mdps_max_val = 2048;
|
||||
break;
|
||||
case LIS_SINGLE_ID:
|
||||
printk(KERN_INFO DRIVER_NAME ": 1-byte sensor found\n");
|
||||
dev->read_data = lis3lv02d_read_8;
|
||||
dev->mdps_max_val = 128;
|
||||
break;
|
||||
default:
|
||||
printk(KERN_ERR DRIVER_NAME
|
||||
": unknown sensor type 0x%X\n", lis3_dev.whoami);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
mutex_init(&dev->lock);
|
||||
lis3lv02d_add_fs(dev->device);
|
||||
lis3lv02d_add_fs(dev);
|
||||
lis3lv02d_increase_use(dev);
|
||||
|
||||
if (lis3lv02d_joystick_enable())
|
||||
|
@ -467,10 +495,10 @@ int lis3lv02d_init_device(struct acpi_lis3lv02d *dev)
|
|||
|
||||
printk("lis3_init_device: irq %d\n", dev->irq);
|
||||
|
||||
/* if we did not get an IRQ from ACPI - we have nothing more to do */
|
||||
/* bail if we did not get an IRQ from the bus layer */
|
||||
if (!dev->irq) {
|
||||
printk(KERN_ERR DRIVER_NAME
|
||||
": No IRQ in ACPI. Disabling /dev/freefall\n");
|
||||
": No IRQ. Disabling /dev/freefall\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
|
|
|
@ -159,14 +159,14 @@ struct axis_conversion {
|
|||
s8 z;
|
||||
};
|
||||
|
||||
struct acpi_lis3lv02d {
|
||||
struct acpi_device *device; /* The ACPI device */
|
||||
acpi_status (*init) (acpi_handle handle);
|
||||
acpi_status (*write) (acpi_handle handle, int reg, u8 val);
|
||||
acpi_status (*read) (acpi_handle handle, int reg, u8 *ret);
|
||||
struct lis3lv02d {
|
||||
void *bus_priv; /* used by the bus layer only */
|
||||
int (*init) (struct lis3lv02d *lis3);
|
||||
int (*write) (struct lis3lv02d *lis3, int reg, u8 val);
|
||||
int (*read) (struct lis3lv02d *lis3, int reg, u8 *ret);
|
||||
|
||||
u8 whoami; /* 3Ah: 2-byte registries, 3Bh: 1-byte registries */
|
||||
s16 (*read_data) (acpi_handle handle, int reg);
|
||||
s16 (*read_data) (struct lis3lv02d *lis3, int reg);
|
||||
int mdps_max_val;
|
||||
|
||||
struct input_dev *idev; /* input device */
|
||||
|
@ -187,11 +187,11 @@ struct acpi_lis3lv02d {
|
|||
unsigned long misc_opened; /* bit0: whether the device is open */
|
||||
};
|
||||
|
||||
int lis3lv02d_init_device(struct acpi_lis3lv02d *dev);
|
||||
int lis3lv02d_init_device(struct lis3lv02d *lis3);
|
||||
int lis3lv02d_joystick_enable(void);
|
||||
void lis3lv02d_joystick_disable(void);
|
||||
void lis3lv02d_poweroff(acpi_handle handle);
|
||||
void lis3lv02d_poweron(acpi_handle handle);
|
||||
void lis3lv02d_poweroff(struct lis3lv02d *lis3);
|
||||
void lis3lv02d_poweron(struct lis3lv02d *lis3);
|
||||
int lis3lv02d_remove_fs(void);
|
||||
|
||||
extern struct acpi_lis3lv02d lis3_dev;
|
||||
extern struct lis3lv02d lis3_dev;
|
||||
|
|
Loading…
Reference in a new issue